WO2020135511A1 - Réseau d'ensembles de collecte de sons et dispositif de collecte de sons - Google Patents

Réseau d'ensembles de collecte de sons et dispositif de collecte de sons Download PDF

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Publication number
WO2020135511A1
WO2020135511A1 PCT/CN2019/128338 CN2019128338W WO2020135511A1 WO 2020135511 A1 WO2020135511 A1 WO 2020135511A1 CN 2019128338 W CN2019128338 W CN 2019128338W WO 2020135511 A1 WO2020135511 A1 WO 2020135511A1
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WO
WIPO (PCT)
Prior art keywords
sound collection
components
sound
array
distance
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2019/128338
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English (en)
Chinese (zh)
Inventor
郑脊萌
高毅
纪璇
黎韦伟
于蒙
夏凯
冯军
陈柱
陈宏洋
阳文彬
王禹
刘勇
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Tencent Technology Shenzhen Co Ltd
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Tencent Technology Shenzhen Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication of WO2020135511A1 publication Critical patent/WO2020135511A1/fr
Priority to US17/319,024 priority Critical patent/US11856376B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/40—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
    • H04R1/406—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers microphones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
    • H04R2201/40—Details of arrangements for obtaining desired directional characteristic by combining a number of identical transducers covered by H04R1/40 but not provided for in any of its subgroups
    • H04R2201/401—2D or 3D arrays of transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
    • H04R2201/40—Details of arrangements for obtaining desired directional characteristic by combining a number of identical transducers covered by H04R1/40 but not provided for in any of its subgroups
    • H04R2201/405—Non-uniform arrays of transducers or a plurality of uniform arrays with different transducer spacing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R2430/00—Signal processing covered by H04R, not provided for in its groups
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R2430/00—Signal processing covered by H04R, not provided for in its groups
    • H04R2430/20—Processing of the output signals of the acoustic transducers of an array for obtaining a desired directivity characteristic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers
    • H04R3/005—Circuits for transducers for combining the signals of two or more microphones

Definitions

  • the present application relates to the technical field of acoustic processing, in particular to a sound collection component array and sound collection equipment.
  • a related art proposes an elliptical sound collection component array that uses eight sound collection components arranged in an oval shape.
  • the eight sound collection components are respectively provided with three sound collection components on both sides of the abscissa of a rectangular coordinate system, and two sound collection components are provided on the abscissa.
  • the above eight sound collection components are respectively along the rectangular coordinate system.
  • the axis of abscissa and the axis of ordinate are axisymmetric, and the above eight sound collection components are generally elongated.
  • a sound collection component array and a sound collection device are provided.
  • the array of sound collection components includes: two first sound collection components, two second sound collection components, and two third sound collection components;
  • Two of the second sound collection components are located on one side of the connection between the two first sound collection components, and two of the third sound collection components are located on the other side of the connection;
  • Two of the second sound collection components are symmetrical with the perpendicular line of the connecting line, and two of the third sound collection components are symmetrical with the perpendicular line;
  • the distance between the two first sound collecting components is greater than the distance between the two second sound collecting components, and the distance between the two first sound collecting components is greater than the two third sounds The distance between the collection components;
  • the distance between the two second sound collection components is different from the distance between the two third sound collection components.
  • a sound collection device includes the above-mentioned sound collection component array.
  • FIG. 1 is a schematic diagram of a far-field voice interaction scenario involved in this application.
  • FIG. 2 is a schematic diagram of a ring-shaped sound collection component array related to the related art
  • FIG. 3 is a self-lobe diagram of the ring-shaped 6 sound collection component array referred to in FIG. 2;
  • FIG. 4 is a schematic diagram of an elliptical sound collection component array related to the related art
  • FIG. 5 is a self-lobe diagram of the elliptical 8 sound collection component array referred to in FIG. 4;
  • FIG. 6 is a schematic diagram of a sound collection component array in an embodiment
  • FIG. 7 is a schematic diagram of an array of sound collection components in an embodiment
  • 15 and 16 are schematic diagrams of two sound collection component arrays arranged horizontally on the top surface of the device.
  • 17 and 18 are schematic diagrams of two sound collection component arrays vertically arranged on the front of the device.
  • a sound collection device provided with a sound collection component can collect sound signals in the surrounding space, and process the sound signals according to a predetermined manner to realize applications such as voice-based human-computer interaction.
  • the sound collection device may also have different product forms.
  • the sound collection device may include but is not limited to at least one of a smart speaker, a smart TV, a smart TV set-top box, a smart robot, and a smart vehicle-mounted device.
  • FIG. 1 shows a schematic diagram of a far-field voice interaction scenario involved in this application.
  • sound collection devices such as smart TVs, smart TV set-top boxes, and smart speakers are placed in the room.
  • the user issues control voices at any location in the room, such as "turning down the volume”.
  • the control voices issued by the user pass through the air
  • the sound collection device processes and recognizes the control voice, obtains corresponding control instructions, and controls the volume to be turned down.
  • a sound collection component refers to a hardware device component that converts sound (waves generated by vibration of an object) into an analog signal (electrical signal).
  • some sound collection components may further convert the obtained analog signal into a digital sampling signal.
  • the sound collecting component may include a microphone, a pickup, a sound sensor, and so on.
  • the sound collection component can usually only collect sound signals at one point, its collection performance and functions that can be realized are relatively limited. Therefore, in the related art, in order to improve the performance and function of sound collection, a scheme is proposed in which a plurality of sound collection components are arranged at different spatial positions to form an array of sound collection components.
  • the sound signal processing chip performs centralized processing on the sound signals collected by multiple sound collection components in the sound collection component array, which can improve the performance of sound collection and expand new functions. For example, in a smart device with voice recognition, multiple sound collection component arrays composed of multiple sound collection components can strengthen the target user's voice, suppress noise in the environment, and locate the direction of the sound source, ultimately improving voice interaction (especially It is the far-field voice interaction) speech recognition performance in the scene.
  • the ring array is a common array of sound collection component arrays.
  • FIG. 2 illustrates a schematic diagram of a ring-shaped sound collection component array related to the related art.
  • the ring-shaped sound collection component includes 6 sound collection components, which are distributed on a circular boundary centered on the origin of the rectangular coordinate system, and the respective positions of the 6 sound collection components Meet the following formula:
  • r is the radius of the ring, that is to say, the above six sound collection components are evenly distributed on a circular boundary centered on the origin of the rectangular coordinate system, and two of the sound collection components are located on the abscissa of the rectangular coordinate system .
  • ⁇ is the pitch angle, and 0 ⁇ 90, Is the azimuth, and f is a specified frequency, and c is the transmission speed of sound.
  • the physical meaning of the steering vector can be understood as: when a plane wave signal with zero phase and unit intensity When the direction is incident on the array, the phase and amplitude of the output signal of each sound collection component in the array.
  • N is the number of sound collection components
  • I the scanning direction (that is, point-by-point scanning of all possible incident directions in space)
  • the physical meaning of the lobe diagram B is: at a given frequency point f, to what extent can the sound collection component array distinguish from Direction and from Two signals of direction, that is from The direction of the signal pair comes from The gain of the signal in the direction.
  • FIG. 3 shows the self-lobe diagram of the ring-shaped 6 sound collection component array referred to in FIG. 2.
  • FIG. 3 shows the self-lobe diagram of the ring-shaped 6 sound collection component array referred to in FIG. 2.
  • the sound collection component array In order to ensure that the direct sound propagation path between the sound collection component array and the target speaker is unobstructed, the sound collection component array often needs to be arranged on the top or front of the smart device. Therefore, the shape and occupied area of the sound collection component array will limit the appearance and structural design of the product. Taking the ring array widely used in smart speaker products on the market as an example, the occupied area is a circle with a radius of about 3.5 cm. Therefore, the appearance design of smart speakers equipped with this type of sound collection component array often uses (class) cylinders, which cannot reduce the thickness of their hardware products, and makes it difficult for hardware products to be placed in people's daily homes.
  • FIG. 4 shows a schematic diagram of an elliptical sound collection component array related to the related art.
  • the elliptical sound collection component array includes 8 sound collection components, and the coordinate of the i-th sound collection component in the rectangular coordinate system is (xi, yi), where 1 ⁇ i ⁇ 8.
  • the coordinates of the above eight sound collection components in the rectangular coordinate system are as follows:
  • FIG. 5 shows the self-lobe diagram of the elliptical 8 sound collection component array referred to in FIG. 4. Because the placement of this type of array on the product shape determines that most of the time users speak from 270 degrees, so Figure 5 still chooses To show the self-lobe diagram of the above elliptical array.
  • the number of sound collection components in the ring-shaped 6 sound collection component array shown in FIG. 1 above is small, but the array configuration is difficult to adapt to a plane with a narrow width, while the elliptical 8 sound collection component array can adapt to a narrow width plane, but More data needs to be processed, affecting processing efficiency.
  • the present application proposes a 6-sound acquisition array configuration with a narrow and long shape (such as a rectangle or an ellipse).
  • the array of sound collection components of this configuration can be arranged on the top or the smart hardware of the front elevation plane with a narrow and long shape, while maintaining a similar spatial discrimination capability (especially in the direction of 270°, which is most used by users).
  • the sound collection component array may be applied to a sound collection device.
  • the sound collection device may include, but is not limited to, a smart speaker, a smart TV, a smart TV set-top box, a smart robot, and a smart vehicle-mounted device.
  • the sound collection component array 600 includes:
  • Two first sound collection components 610 Two second sound collection components 620, and two third sound collection components 630.
  • two second sound collection components 620 are located on one side of the connection between the two first sound collection components 610, and two third sound collection components 630 are located on the other side of the connection;
  • two second The sound collecting component 620 is symmetrical with the perpendicular line of the connecting line, and the two third sound collecting components 630 are symmetrical with the perpendicular line;
  • the distance between the two first sound collecting components 610 is greater than the two second sound collecting components 620, and the distance between the two first sound collection components 610 is greater than the distance between the two third sound collection components 630;
  • the distance between the two second sound collection components 620 and the two The distance between the three sound collecting components 630 is different.
  • FIG. 6 refers to the rectangular coordinate system, in which the two first sound collection components 610 are on the abscissa axes on both sides of the origin of the rectangular coordinate system, And the distance between the first sound collection component 610 and the ordinate axis of the rectangular coordinate system is the first length.
  • the two second sound collection components 620 are in the first quadrant and the second quadrant of the rectangular coordinate system, respectively.
  • the vertical distance between the second sound collection component 620 and the ordinate axis of the rectangular coordinate system is the second length.
  • the second sound The vertical distance between the collection component 620 and the axis of abscissa is a third length.
  • the two third sound collection components 630 are in the third and fourth quadrants of the rectangular coordinate system, respectively.
  • the vertical distance between the third sound collection component 630 and the ordinate axis of the rectangular coordinate system is the fourth length.
  • the third sound The vertical distance between the acquisition component 630 and the axis of abscissa is the fifth length.
  • the first length is greater than the second length, the first length is greater than the fourth length, and the second length is different from the fourth length.
  • the solution involved in the embodiments of the present application provides a 6-sound collection array that is symmetrical along a perpendicular line connecting a certain two sound collection components, but is asymmetric along the connection between the two sound collection components , Which can adapt to the narrow and long design extending along the connection direction between the two sound collection components, and has fewer sound collection components than the 8 sound collection component array, and the data to be processed in sound signal processing is more Less, so as to achieve the effect of improving the efficiency of sound signal processing while adapting to the narrow and long appearance design.
  • the sound collection component array may be applied to a sound collection device.
  • the sound collection device may include, but is not limited to, a smart speaker, a smart TV, a smart TV set-top box, a smart robot, and a smart vehicle-mounted device.
  • the sound collection component array 700 includes:
  • Two first sound collection components 710, two second sound collection components 720, and two third sound collection components 730 Two first sound collection components 710, two second sound collection components 720, and two third sound collection components 730.
  • two second sound collection components 720 are located on one side of the connection between the two first sound collection components 710, and two third sound collection components 730 are located on the other side of the connection;
  • two second The sound collection component 720 is symmetrical with the perpendicular line of the connecting line, and the two third sound collection components 730 are symmetrical with the perpendicular line;
  • the distance between the two first sound collection components 710 is greater than the two second sound collection components
  • the distance between 720, and the distance between the two first sound collection components 710 is greater than the distance between the two third sound collection components 730;
  • the distance between the two second sound collection components 720 is different from the distance between the two third sound collection components 730.
  • FIG. 7 refers to the rectangular coordinate system. As shown in FIG. 7, the six sound collection components in the sound collection component array 700 are set according to the rectangular coordinate system.
  • the two first sound collection components 710 are respectively located on the abscissa axis on both sides of the origin of the rectangular coordinate system, and the distance between the first sound collection component 710 and the ordinate axis of the rectangular coordinate system is the first length.
  • the two second sound collection components 720 are in the first quadrant and the second quadrant of the rectangular coordinate system, respectively.
  • the vertical distance between the second sound collection component 720 and the ordinate axis of the rectangular coordinate system is the second length, and the second sound
  • the vertical distance between the acquisition component 720 and the axis of abscissa is the third length.
  • the two third sound collection components 730 are in the third and fourth quadrants of the rectangular coordinate system, respectively.
  • the vertical distance between the third sound collection component 730 and the ordinate axis of the rectangular coordinate system is the fourth length.
  • the third sound The vertical distance between the acquisition component 730 and the axis of abscissa is the fifth length.
  • the first length is greater than the second length, the first length is greater than the fourth length, and the second length is different from the fourth length.
  • the distance between the two first sound collection components 710, the distance between the two second sound collection components 720, and the distance between the two third sound collection components 730 may follow a certain ratio .
  • the distance between the two first sound collection components 710 is three times the distance between the two second sound collection components 720; and the two third sound collection components 730 The distance between them is twice the distance between the two second sound collection components 720.
  • the first length is three times the second length
  • the fourth length is twice the second length
  • the ratio between the distance between the two first sound collection components 710 and the distance between the two second sound collection components 720, and/or the two third sound collections may also be other values.
  • the distance between the two first sound collection components 710 may be 2.8 times or 3.2 times the distance between the two second sound collection components 720, etc.
  • the distance between the two third sound collection components 730 is The distance between the two second sound collecting components 720 is 1.8 times or 2.2 times and so on.
  • the vertical distance between the connection line of the second sound collection component 720 and the two first sound collection components 710 and the vertical distance between the third sound collection component 730 and the connection line are also Can follow a certain proportional relationship.
  • the vertical distance between the second sound collection component 720 and the connection line between the two first sound collection components 710 is between the third sound collection component 730 and the connection line Has the same vertical distance.
  • the third length and the fifth length are the same.
  • the vertical distance between the connection line of the second sound collection component 720 and the two first sound collection components 710 and the distance between the third sound collection component 730 and the connection line can also be different.
  • the ratio between the third length and the fifth length may be 10:9 or 5:4.
  • the first length is three times the second length
  • the fourth length is twice the second length
  • the third length and the fifth length are the same, for example, as shown in FIG. 7
  • the array shown is an asymmetric elliptical 6mic array, and the microphone placement is:
  • d x and d y are the distance between the corresponding microphone on the x-axis (abscissa axis) and y-axis (ordinate axis) of the rectangular coordinate system.
  • the distance between the two second sound collection components 720 and the vertical distance between the second sound collection component 720 and the above connection ie, the connection between the two first sound collection components 710
  • the ratio is 5:2, that is, the ratio of the second length to the third length is 5:4.
  • the second length is 1.5 cm
  • the third length is 1.2 cm.
  • the sound collection component is a microphone component or a pickup component.
  • the six sound collection components are located in the same plane.
  • the above six sound collection components shown in FIG. 7 may be arranged in the same plane.
  • FIG. 8 to FIG. 14 show self-lobe diagrams of the three sound collection component arrays according to the embodiments of the present application at different main azimuth angles.
  • FIG. 8 shows the circular 6 sound collection component array corresponding to FIG. 2 (referred to as the circular 6 array in the figure), the elliptical 8 sound collection component array corresponding to FIG. 4 (referred to as the elliptical 8 array in the figure) and the present
  • FIG. 9 shows an array of circular 6 sound collection components corresponding to FIG. 2, an array of oval 8 sound collection components corresponding to FIG. 4, and an array of asymmetric elliptical 6 sound collection components provided in embodiments of the present application.
  • f 500Hz, 1000Hz, 1500Hz and 2000Hz self lobe diagram.
  • f 500Hz, 1000Hz, 1500Hz and 2000Hz self lobe diagram.
  • FIG. 11 shows a circular 6 sound collection component array corresponding to FIG. 2, an elliptical 8 sound collection component array corresponding to FIG. 4, and an asymmetric elliptical 6 sound collection component array provided in an embodiment of the present application.
  • f 500Hz, 1000Hz, 1500Hz and 2000Hz self lobe diagram.
  • FIG. 12 shows the circular 6 sound collection component array corresponding to FIG. 2, the elliptical 8 sound collection component array corresponding to FIG. 4, and the asymmetric elliptical 6 sound collection component array provided in the embodiment of the present application.
  • f 500Hz, 1000Hz, 1500Hz and 2000Hz self lobe diagram.
  • FIG. 13 shows an array of ring-shaped 6 sound collection components corresponding to FIG. 2, an array of oval-shaped 8 sound collection components corresponding to FIG. 4, and an array of asymmetric elliptical 6 sound collection components provided in embodiments of the present application.
  • f 500Hz, 1000Hz, 1500Hz and 2000Hz self lobe diagram.
  • FIG. 14 shows a circular 6 sound collection component array corresponding to FIG. 2, an elliptical 8 sound collection component array corresponding to FIG. 4, and an asymmetric elliptical 6 sound collection component array provided in an embodiment of the present application.
  • f 500Hz, 1000Hz, 1500Hz and 2000Hz self lobe diagram.
  • the spatial resolution performance of the asymmetric elliptical 6mic array is not worse, even better than the elliptical 8mic array, which is reflected in the better sidelobe suppression performance of its own lobe pattern and the narrower main lobe width.
  • the asymmetric 6mic array shown in the present application can better adapt to the narrower planar layout than the circular 6mic array, and supports more flexible smart hardware product design. Moreover, by using fewer microphones than the elliptical 8mic array, the hardware cost and computational complexity are reduced, and at the same time, better spatial separation performance is achieved near the main user's use direction (270°).
  • the solution involved in the embodiment of the present application provides a 6-sound symmetrical along the perpendicular line connecting a certain two sound collecting components, but asymmetric along the connecting line between the two sound collecting components
  • the collection component array can adapt to the narrow and long design extending along the connecting direction between the two sound collection components, and has fewer sound collection components than the 8 sound collection component array, which needs to be processed in sound signal processing There is less data, so as to achieve the effect of improving the efficiency of sound signal processing while adapting to the narrow and long appearance design.
  • a sound collection device is further provided, and the sound collection device includes the sound collection component array shown in FIG. 6 or FIG. 7 described above.
  • the sound collection component array is horizontally arranged on the top surface of the sound collection device; or, the sound collection component array is vertically arranged on the front surface of the sound collection device.
  • the above top surface is an outer surface facing directly upward when the sound collection device is placed in a specified posture; and the above front surface is a designated outer surface facing each horizontal surface when the sound collection device is placed in a specified posture.
  • the above-mentioned designated posture is the posture that the sound collecting device is installed or placed when normally used according to the design requirements.
  • the above-mentioned designated posture may be a posture in which the sound collecting device is installed or placed according to the guidance.
  • the above-mentioned designated posture may be a posture in which the sound collecting device is installed or placed according to the instructions of the device's instruction manual.
  • the above-mentioned specified posture may also be a posture determined for installation or placement according to the installation/placement indication components (such as support frames, anti-slip mats, mounting holes reserved for wall-mounted components, etc.) in the sound collection device.
  • the above-mentioned specified posture is a posture where the surface of the support frame or the non-slip pad is vertically downward; or, when a surface of the sound collection device is provided with
  • the above-mentioned designated posture is the posture where the surface on which the mounting hole is located is perpendicular to the horizontal plane.
  • FIG. 15 and FIG. 16 shows a schematic diagram of two sound collecting component arrays arranged horizontally on the top surface of the device.
  • the asymmetric 6mic array is arranged along the long axis direction of the elliptical top surface of the smart speaker.
  • the minimum length of the long symmetry axis of the top surface can be designed as the distance between the two first sound collection components, and the minimum length of the short symmetry axis of the top surface of the smart speaker can be designed as the sum of the third length and the fifth length.
  • FIG. 17 and FIG. 18 show schematic diagrams of two sound collection component arrays vertically arranged on the front of the device. Take the sound collection device as a smart TV with a narrow and long area outside the front screen, and the sound collection component as a mic. The direction of the connection line between the two first sound collection components is the horizontal direction.
  • the first direction pointed by the perpendicular line of the connecting line between the two first sound collection components and the sound collection device is the same or opposite.
  • the sound collection device may be a smart device with a narrow and long top surface.
  • the above-mentioned oval 6 sound collection component array is symmetrical
  • the direction pointed by the axis that is, the ordinate direction of the rectangular coordinate system corresponding to the sound collection component array shown in FIG. 6 or FIG. 7 above) is the same as or opposite to the front direction of the sound collection device.
  • the direction pointed by the ordinate of the rectangular coordinate system that is, the first direction in FIG. 15
  • the front of the smart speaker that is, in FIG. 15
  • the second direction is the opposite.
  • the third direction pointed by the perpendicular line of the connecting line between the two first sound collection components is vertically upward or vertical down.
  • the front of the smart TV is parallel to the horizontal plane, and is arranged in an asymmetric 6mic array in a rectangular coordinate system.
  • the direction of the rectangular coordinate system (the first direction in FIG. 17) is vertical up.
  • the front face of the smart TV is parallel to the horizontal plane, and is arranged in an asymmetric 6mic array in a rectangular coordinate system, and the direction of the rectangular coordinate system (the first direction in FIG. 18) is vertical down.

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  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • General Health & Medical Sciences (AREA)
  • Circuit For Audible Band Transducer (AREA)

Abstract

L'invention concerne un réseau d'ensembles de collecte de sons. Le réseau d'ensembles de collecte de sons comprend : deux premiers ensembles de collecte de sons, deux seconds ensembles de collecte de sons et deux troisièmes ensembles de collecte de sons, les deux seconds ensembles de collecte de sons étant situés sur un côté d'une ligne de connexion entre les deux premiers ensembles de collecte de sons, et les deux troisièmes ensembles de collecte de sons sont situés de l'autre côté de la ligne de connexion; les deux seconds ensembles de collecte de sons sont symétriques par rapport à la bissectrice perpendiculaire de la ligne de connexion, et les deux troisièmes ensembles de collecte de sons sont symétriques autour de ladite bissectrice perpendiculaire; la distance entre les deux premiers ensembles de collecte de sons est supérieure à la distance entre les deux seconds ensembles de collecte de sons, et la distance entre les deux premiers ensembles de collecte de sons est supérieure à la distance entre les deux troisièmes ensembles de collecte de sons; et la distance entre les deux seconds ensembles de collecte de sons est différente de la distance entre les deux troisièmes ensembles de collecte de sons.
PCT/CN2019/128338 2018-12-27 2019-12-25 Réseau d'ensembles de collecte de sons et dispositif de collecte de sons Ceased WO2020135511A1 (fr)

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US17/319,024 US11856376B2 (en) 2018-12-27 2021-05-12 Sound acquisition component array and sound acquisition device

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CN201811610594.2 2018-12-27
CN201811610594.2A CN109660918B (zh) 2018-12-27 2018-12-27 声音采集组件阵列及声音采集设备

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US17/319,024 Continuation US11856376B2 (en) 2018-12-27 2021-05-12 Sound acquisition component array and sound acquisition device

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